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authorOliver Walsh <owalsh@redhat.com>2017-06-07 23:26:25 +0100
committerOliver Walsh <owalsh@redhat.com>2017-07-03 14:34:08 +0100
commit6140d801f1e51397d3ee3ae010434f07b8e891ec (patch)
tree90547c0b9e0cb0426ef1d9faa2c601b40156110f /manifests/profile/base/nova/migration
parentd5582dd84bb0df561132e258f3dbdd16b42eb676 (diff)
Refactor nova migration config into client & target profiles
The nova migration config has always been applied by the base::nova profile. It assumed that libvirtd/nova-compute and are all running on the same host. Where this config didn't apply (e.g a nova api host) it was disabled by a flag. This approach is not compatible with containers. Hieradata for all containers are combined so per-host flags no longer work, and we can no longer assume libvirtd and nova-compute run in the same context. This change refactors the profiles out of the base nova profile and into a client profile and a target profile that can be included where appropriate. Change-Id: I063a84a8e6da64ae3b09125cfa42e48df69adc12 Implements: blueprint tripleo-cold-migration
Diffstat (limited to 'manifests/profile/base/nova/migration')
-rw-r--r--manifests/profile/base/nova/migration/client.pp100
-rw-r--r--manifests/profile/base/nova/migration/target.pp120
2 files changed, 220 insertions, 0 deletions
diff --git a/manifests/profile/base/nova/migration/client.pp b/manifests/profile/base/nova/migration/client.pp
new file mode 100644
index 0000000..12b83dc
--- /dev/null
+++ b/manifests/profile/base/nova/migration/client.pp
@@ -0,0 +1,100 @@
+# Copyright 2016 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# == Class: tripleo::profile::base::nova::migration
+#
+# Nova migration client profile for tripleo
+#
+# === Parameters
+#
+# [*libvirt_enabled*]
+# (Optional) Whether or not Libvirt is enabled.
+# Defaults to false
+#
+# [*nova_compute_enabled*]
+# (Optional) Whether or not nova-compute is enabled.
+# Defaults to false
+#
+# [*step*]
+# (Optional) The current step of the deployment
+# Defaults to hiera('step')
+#
+# [*ssh_private_key*]
+# (Optional) SSH private_key for migration SSH tunnel.
+# Defaults to ''
+#
+# [*ssh_port*]
+# (Optional) Port that SSH target services is listening on.
+# Defaults to 22
+#
+# [*libvirt_tls*]
+# (Optional) Whether or not libvird TLS service is enabled.
+# Defaults to false
+
+class tripleo::profile::base::nova::migration::client (
+ $libvirt_enabled = false,
+ $nova_compute_enabled = false,
+ $step = Integer(hiera('step')),
+ $ssh_private_key = '',
+ $ssh_port = 22,
+ $libvirt_tls = false,
+) {
+
+ include ::tripleo::profile::base::nova::migration
+
+ if $step >= 4 {
+
+ # Libvirt setup (live-migration)
+ if $libvirt_tls {
+ class { '::nova::migration::libvirt':
+ transport => 'tls',
+ configure_libvirt => $libvirt_enabled,
+ configure_nova => $nova_compute_enabled,
+ }
+ } else {
+ # Reuse the cold-migration SSH tunnel when TLS is not enabled
+ class { '::nova::migration::libvirt':
+ transport => 'ssh',
+ configure_libvirt => $libvirt_enabled,
+ configure_nova => $nova_compute_enabled,
+ client_user => 'nova_migration',
+ client_extraparams => {'keyfile' => '/etc/nova/migration/identity'},
+ client_port => $ssh_port
+ }
+ }
+
+ if !empty($ssh_private_key) {
+ # Nova SSH tunnel setup (cold-migration)
+ $migration_identity = $ssh_private_key
+ }
+ else {
+ $migration_identity = '# Migration over SSH disabled by TripleO'
+ }
+
+ file { '/etc/nova/migration/identity':
+ content => $migration_identity,
+ mode => '0600',
+ owner => 'nova',
+ group => 'nova',
+ require => Package['openstack-nova-migration']
+ }
+
+ file_line { 'nova_ssh_port':
+ ensure => present,
+ path => '/var/lib/nova/.ssh/config',
+ after => '^Host \*$',
+ line => " Port ${ssh_port}",
+ }
+ }
+}
diff --git a/manifests/profile/base/nova/migration/target.pp b/manifests/profile/base/nova/migration/target.pp
new file mode 100644
index 0000000..7c21028
--- /dev/null
+++ b/manifests/profile/base/nova/migration/target.pp
@@ -0,0 +1,120 @@
+# Copyright 2016 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# == Class: tripleo::profile::base::nova::migration::target
+#
+# Nova migration target profile for tripleo
+#
+# === Parameters
+#
+# [*step*]
+# (Optional) The current step of the deployment
+# Defaults to hiera('step')
+#
+# [*ssh_authorized_keys*]
+# (Optional) List of SSH public keys authorized for migration.
+# If no keys are provided then migration over ssh will be disabled.
+# Defaults to []
+#
+# [*ssh_localaddrs*]
+# (Optional) Restrict ssh migration to clients connecting via this list of
+# IPs.
+# Defaults to [] (no restriction)
+#
+# [*services_enabled*]
+# (Optional) List of services enabled on the current role.
+# If the nova_migration_target service is not enabled then migration over
+# ssh will be disabled.
+# Defaults to hiera('service_names', [])
+
+class tripleo::profile::base::nova::migration::target (
+ $step = Integer(hiera('step')),
+ $ssh_authorized_keys = [],
+ $ssh_localaddrs = [],
+ $services_enabled = hiera('service_names', []),
+) {
+
+ include ::tripleo::profile::base::nova::migration
+
+ validate_array($ssh_localaddrs)
+ $ssh_localaddrs.each |$x| { validate_ip_address($x) }
+ $ssh_localaddrs_real = unique($ssh_localaddrs)
+ validate_array($ssh_authorized_keys)
+ $ssh_authorized_keys_real = join($ssh_authorized_keys, '\n')
+
+ if $step >= 4 {
+ if !empty($ssh_authorized_keys_real) {
+ if ('nova_migration_target' in $services_enabled) {
+ if !empty($ssh_localaddrs_real) {
+ $allow_type = sprintf('LocalAddress %s User', join($ssh_localaddrs_real,','))
+ $deny_type = 'LocalAddress'
+ $deny_name = sprintf('!%s', join($ssh_localaddrs_real,',!'))
+
+ ssh::server::match_block { 'nova_migration deny':
+ name => $deny_name,
+ type => $deny_type,
+ order => 2,
+ options => {
+ 'DenyUsers' => 'nova_migration'
+ },
+ notify => Service['sshd']
+ }
+ }
+ else {
+ $allow_type = 'User'
+ }
+ $allow_name = 'nova_migration'
+
+ ssh::server::match_block { 'nova_migration allow':
+ name => $allow_name,
+ type => $allow_type,
+ order => 1,
+ options => {
+ 'ForceCommand' => '/bin/nova-migration-wrapper',
+ 'PasswordAuthentication' => 'no',
+ 'AllowTcpForwarding' => 'no',
+ 'X11Forwarding' => 'no',
+ 'AuthorizedKeysFile' => '/etc/nova/migration/authorized_keys'
+ },
+ notify => Service['sshd']
+ }
+ $migration_authorized_keys = $ssh_authorized_keys_real
+ $migration_user_shell = '/bin/bash'
+ }
+ else {
+ # Remove the keys and prevent login when migration over SSH is not enabled
+ $migration_authorized_keys = '# Migration over SSH disabled by TripleO'
+ $migration_user_shell = '/sbin/nologin'
+ }
+ }
+ else {
+ # Remove the keys and prevent login when migration over SSH is not enabled
+ $migration_authorized_keys = '# Migration over SSH disabled by TripleO'
+ $migration_user_shell = '/sbin/nologin'
+ }
+
+ file { '/etc/nova/migration/authorized_keys':
+ content => $migration_authorized_keys,
+ mode => '0640',
+ owner => 'root',
+ group => 'nova_migration',
+ require => Package['openstack-nova-migration']
+ }
+
+ user {'nova_migration':
+ shell => $migration_user_shell,
+ require => Package['openstack-nova-migration']
+ }
+ }
+}